/** 
 * <p>Original Author:  jessefreeman</p>
 * <p>Class File: CamoStyleSheetLibrary.as</p>
 * 
 * <p>Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:</p>
 * 
 * <p>The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.</p>
 * 
 * <p>THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.</p>
 * 
 * <p>Licensed under The MIT License</p>
 * <p>Redistributions of files must retain the above copyright notice.</p>
 *
 * <p>Revisions<br/> 
 * 	2.0  Initial version Jan 19, 2009</p>
 *
 */

package camo.core.managers
{
	import camo.core.style.CamoStyleSheet;
	
	public class StyleSheetManager
	{
		
		public var styleSheets:Array = [];
		
		/**
		 * 
		 * @param enforcer
		 * 
		 */		
		public function StyleSheetManager() 
		{
			
		}
		
		/**
		 * 
		 * @param styleName
		 * @return 
		 * 
		 */		
		public function getStyle(styleName:String):Object
		{
			return lookUpAndRetrieve(styleName, "hasStyle", "getStyle");
		}
		
		/**
		 * 
		 * @param styeName
		 * @return 
		 * 
		 */		
		public function hasStyle(styeName : String):Boolean
		{
			return lookUp(styeName, "hasStyle");
		}
		
		/**
		 * 
		 * @param id
		 * @param sheet
		 * 
		 */		
		public function addStyleSheet(id:String, sheet:CamoStyleSheet):void
		{
			styleSheets[id] = sheet;
		}
		
		/**
		 * 
		 * @param id
		 * 
		 */		
		public function removeStyleSheet(id:String):void
		{
			styleSheets[id] = null;
			delete styleSheets[id];
		}
		
		/**
		 * 
		 * @param id
		 * @param hasMethod
		 * @param getMethod
		 * @return 
		 * 
		 */		
		protected function lookUpAndRetrieve(id:String, hasMethod:String, getMethod:String): *
		{
			for each (var styleSheet:CamoStyleSheet in styleSheets)
			{
				if(styleSheet[hasMethod](id))
					return styleSheet[getMethod](id);
				else
					return null;	
			} 
		}
		
		/**
		 * 
		 * @param id
		 * @param hasMethod
		 * @return 
		 * 
		 */		
		protected function lookUp(id:String, hasMethod:String): Boolean
		{
			var exists:Boolean;
			
			for each (var styleSheet:CamoStyleSheet in styleSheets)
			{
				exists = styleSheet[hasMethod](id);	
			}
			
			return exists; 
		}
		
		/**
		 * 
		 * @param id
		 * @param CSSText
		 * 
		 */		
		public function parseCSS(id:String, CSSText : String):void
		{
			var sheet:CamoStyleSheet = new CamoStyleSheet();
				sheet.parseCSS(CSSText);
				
			addStyleSheet(id, sheet);
		}
	}
}